<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title><%= title %></title>
  </head>
  <body>
    <header>
      <% if(isLogin){ %>
      <span>欢迎回来</span>
      <% }else{ %>
      <button>登录</button> <button>注册</button>
      <% } %>
    </header>
  </body>
</html>
